Liquid-flow lock



Feb. 17,1925. 1,526,372

` M. J. PU N DZAK LIQUID FLOW LOCK Filed Oct. 9, 1923 Patented Feb. 17, 1925.

\ Ares PATENT l N meer-mrow Loek.'

.replication 'mea center 9, `i'esza.- se-ner no. cames.

To all-whom 'it may/concern:

Be it known that l, Miei-mun J. PUNDZAK, a citizen of Czechoslovakia, residing at Bayonne, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in LiquideFlow Locks, of which the following is a specification.

The main object of this invention is to provide a lock used in combination with a fuel oil system for the purpose of closing the fuel supply by the lturning of a. key.

Another object is to provide a lock as mentioned, having a plunger communicating with a. fuel supply pipe, said plunger being manipulated to the opened or close-d position by means of a key.

These and other objects will become apparent in the description below, in which characters of reference refer to like-named parts ofthe drawing.

Referring briefly to the drawing, Figure 1 is a front elevational view of the leek, showing the cover removed therefrom, the plunger l'ieing shown in closed position.

Figure 2 is an exterior front elevational viewsii'nilar to Figure 1, but showing the lock in open position. Y

Figure 3 is a` cross sectional view taken on line 3--3 of Figure 2.

`Referring in detail to the drawing, the numeral 10 indicates the bottom of the casing whose edge is bounded by a wall 11. At various positions on the wall, prominences are formed thru which screws 12 pass, said screws retaining the cover 13 on the wall 11. The lower edge of the body of the lock is open and an irregularly shaped tubing 15 of substantially rectangular cross section is retained between the bottom 10 and the cover 13 by screws 14. A circular channel 16 passes entirely thru the length ofthe tubing 15 and con'inuinicates with the fuel supply tank and the engine using said fuel. A sleeve 18 pro-jects from a point intermedi ate the length of the tubing into the lock body. The eh amber 17 in the sleeve 18 communicates with the channel 16 and external threads at the upper end of the sleeve engage similar threads of a cap 19. A plunger 2O is slidably mounted in the chamber 17 and is provided with a conical tip 21, said tip having a` similar seat 22, the seat traversing the eireular channel 16. A stem 23 extends upwardly from the opposite end of the plunger and is journalled in the pillow block 24, the latter being rigidly mounted to the bottom 10* ofthe c-a'siiig. At shunt lever 251 p-ivoted lat 26 in the casing has one end of a bar 27=attaehed thereto. A hub 23 fixed? tofthe stem 23 intermedi te its length is secured to the bar 27, and the stein is normally urged downwardly by `a spring 29 mounted between the pillow block 24 and the hub 28. The free end of the bar is slotted at 30, and a pin 31 attached to an arm 32 is slidably mounted in said slot. The arm forms a` projection of a slide rod 33 having a slot 34 in which guide pins 35 are engaged. At the lower end of the rod, the usual semi-circular cutout portion 36 is provided in which a keu,T of the usual type is manipulated, the key being passed into the confines of the lock easing thru the slot 37. At the lower end of the rod opposite to the cut-out portion, a lug 38 projects and engages a similar lug 39 which forms an integral part of a pivoted arm 40, the arm be ing pivoted at its upper end and having one edge 41 normally projecting beyond the outout portion 36 as is shown in Figures 1 and 2. The pivoted arm is normally retained by a leaf spring 42 in the position sho-wn in Figure 1, one end of the same being firmly anchored in a lug 43.

The. operation of the lug is as follows. Member 15 may be joined to the 'fuel supply in any manner suitable for the installatio-n. After the tubing has been attached to the supply line, the device is ready for operar tion. l-Vhen the plunger 2O is in the position shown in Figure 1, the channel 16 is closed and the fuel oil cut off. ln order to lift said plunger, a key is inserted thru slot 37 and rotated. In so doing. the edge of the key will first engage the edge 41 of the pivoted arm 40 and urge the lug 39 outwardly. As this occurs, the key then engages the senil-circular eut-out portion of the rod 33 and urges the same upwardly. By lifting the rod 33 upwardly, the arm 32 connected to the bar 27 rotates the latter upwardly and lifts the conical portion 21 of the plunger 2O from its seat 22, thus opening the channel 16 and permitting the flow of liquid. When the key has completed a revolution, the rod 33 will be in the position indicated in Figure 2, and the lug 39 will be located below the lug 38. This occurs only when the plunger is iu lifted position. When the reverse operation takes place, the lug 39 is located above the lug 38 and thereby locks the plunger in lowered position. In order to lock the de-V vice when the same is released, the key is in lever pivoted in the easing, a bar pivoted to said lever, said bar when rotated being adapted to lift the plunger, a spring on said stem normally lowering said lever, key operated means for lifting said bar, and key operated means for looking the lirst-named means in lifted or lowered position, said key being adapted to ing or lowering' the plunger.

In testimony whereof l. alix my signature.

MICHAEL J. PUNDZA lx'.

be removed after lift- 20 

